Whilst the likes of Mercedes, Ferrari and McLaren are seemingly too far away to mount a real challenge for the championship next season, Horner has stated that he expects it to be closer in 2024.
"We saw that in 2020 with Mercedes that was their most dominant year ever and yet we were able to beat them in 2021," Horner told media.
"There is subtle change, but I think that nothing stands still. We've seen competitors come in closer at different venues and I'm sure concepts will converge.
"Stable regulations always concertina, so I don't think we'll ever be able to repeat the season that we've had.
"But hopefully we can take the lessons from RB19 and apply to RB20, and come up with a car that can defend these titles."
Red Bull's rivals look to catch up
"It's been different people at different times, it's swung around from McLaren having a surge, Ferrari having a surge, Mercedes turning up at one point," continued Horner, talking about his rival's chances.
"But particularly with Max this year, he's just been outstanding the way he's been on top of the car, the strategy, the tyres.
"We almost didn't need the strategist [in Abu Dhabi] because he seems to be doing the strategy for both of the cars. But as the strategist pointed out to me, he is considerably more expensive than she is!"
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